Dispensing device for cartridges of calking material and the like



July 8, 1952 w. A. SHERBONDY DISPENSING DEVICE FOR CARTRIDGES OF CALKING MATERIAL AND THE LIKE Filed Oct. 1947 Patented July 8, 1952 DISPENSING DEVICE FOR CARTRIDGES O 3 Application October This invention relates 6, 1947,seaa1N0-.7 g,1 6 laims. (01. 2224,2

to "a "dispensing; device for calking material and thelike; comprising a handle in which one end of a cartridge adapted to contain such material may be mounted,ythe handle carrying means-to engage the far end of 'the cartridge and, hold it.in place and being equipped with manually operable feedingmechanism to expel the contents from the cartridge. The object of the invention is to provide an extremely simple device-for. securing. the cartridge in place; enabling the-expulsion of the contents as desired bymanipulation of a suitable hand lever on the handle.

' In its preferred-form my invention employs a cartridge in theform of a paper tube having at one end an internal cap which may. act as a plunger in extruding material, and at the other end a cap having a central opening through which the extrusion takes place.-

A spout, which may be ready shipping containenfor the calking material.

When it is desired to. use the cartridgait is only necessary to mount it. in the apparatus, which is equipped with .a spring loop or bail carried by the handle and adapted to overhang the front end of the cartridge tofhold itinplace.

, The discharge apparatus may comprise a pusher rod hand leverand 'suitableirnechanism V operated therebyto advance the rod and .means to retain the gain made. 'S uchf pusher acts to advance the'internal cap a's'aplunger to'jforce out the seal and then discharge the contents through the spout. When the'cartridge' has been emptied, the release of the retainingdevice allows the pusher rod to be withdrawn, whereupon the used cartridge may be discarded anda-fresh'one' installed. a r 1 A preferred form of the invention is illustrated in the drawings hereof and'is hereinafter more fully described and the essential novel features are-set out in the claims.

In the drawings, Fig. l is a side elevation of my dispensing device with the cartridge mounted therein, the view being partially broken out and in section adjacent thedischarge end of the cartridge; Fig. 2 is a fragmentary vertical section on theline 4- 4 onlfig'. 1 looking rearwardly;

and Fig. 5 is a rear section taken on.thejili ne'.5.. 5 on Fig.1lookingforwardly. I 1 As shown in Figs. 1 and 2, it indicates thebody of the cartridge, which is a paper .tubes m ila'r to a mailing tube preferably spirally wou ndm 2i) indicates an internal cap at the headaen d ofg'the cartridge, which is preferablya sheet meta ber having an internal flange leading tow end of the tube and snugly engaging. the-wall thereof 30 indicates the external. capiat" the discharge end having a centralldischarge open? ving. The discharge spout 36 is'l shownlin 1 ;.as mounted in this opening though .itjm' carried by the dispensing apparatus. case it registers withtheopeningin usefii. ..,.T .The cartridge WithltS two; capsan-d withthe discharge opening ,closed (either 1b y1a suitable frangible strip across the. opening or-aIremovable plug in the spout, ifv the spout is mounted: on the cartridge) constitutes the shippingcontainerior the calking compound or other materiall 1 V l =I.have-:s'hown' the closure 30 .as comprisin a disc-likemember having an ,externalilan'ge'tl to engage the exterior ofthe tube andlthe'nia'n internal annular portion 32 to engage the interior. From the inner edge of, the annular portion 3 2 there is a transverse disc-like part 34 having the roundcentral opening 35; The two Wallsjl and 32 flare from each other slightlyso, that the cap may be readily placed over'the' end of the paper tube and being forced lengthwi'seof the tube; will pinch'the material of the tube betweenthe external flange 3| and the internal wall 32. I. The spout 36 may consist simply ofja sheet metal member bent onto itself to produce a nearly complete tube having-a flange 38 at the inn'erend. This tube may be shoved from the innerfac. of the cap outwardly until the flange 33 abuts the :disc-likeportion 34 of the cap andthe resilience of the .split tube tending to..open it'wlllfholdfit in, place. When. in place. the longitudinal slot between the meeting .edges'of the. sheet making theflspout is substantially closed. f

1' In shipping the containericarrying the spout, I provide a plug of rubber or other suitable material 39 in the spout adjacent its discharge end. If the containeris shipped without the spout. the discharge opening. is closed by a thinreadily frangible strip of material secured to thefinner face of the cap and extending across the opening. When .the cartridge is to be used it is pla ced in the manual apparatus about to bev described,

which may operate .a pushing rod to .pushflthe end. The force of the advancing material forces out the plug in the spout or breaks the frangible seal on the cap, as the case may be.

The handle referred to comprises a member 40 preferably made of sheet metal doubled forwardly on itself to provide a body portion 4| and a hand grip 42, each having two spaced walls. The body portion is flanged outwardly to each side to 43 at its forward end. These flanges are riveted to a cup 45 in which the rear end of the cartridge seats.

The pushing mechanism comprises a rod 50- extending through the body 4| of thehandle and through the cup 45 and carrying at its forward end a disc 52 adapted to engage and advance the internal cap 20 as a piston. To advance the rod and retain the gain made, I provide in the space within the body of the handle one or more normally vertical plates 60 loosely embracing the rod and pressed rearwardly in a vertical position by a compression spring62; A handle 63 pivoted in the hand grip has a lug Mat its upper end adapted to engage the lower portion of the rearmost plate 60 and cant the plates to bite into the rod and thereby shove it forward, against the action of the spring, to advance the piston, This same spring acts to maintain the lever normally projecting forward from the hand grip, as shown in Fig. 2, and the rearward movement of the lever by the fingers of the operators hand embracing the hand grip thus advances the rod.

The gain made by each advancement of the rod is retained by a detent pawl at the rear position to bind against the rod. The pawl is tinued to form the connecting U-shaped loop 88. The arcuate portion is adapted to embrace snugly the spout on the cartridge and thus position the cartridge at that end, or if desired to carry a spout for a non-spouted cartridge. The U- shaped portion extends upwardly above'the cartridge as shown in Fig. l and forms a convenient handle for positioningpiy, disengaging the bail loop from thespout. Such upper-portion. is preferably inclined forwardly from the cartridge, as shown at 89, for convenient handling.

In mounting the cartridge the bail is swung to idle position and the head end of the cartridge is shoved into'the handle sleeve and then the bail is sprung over the far end. The straight legs of 'the bail are of such length with reference to the cartridge-that the looped transverse portion of the bail engages snugly against the outer face of the V thehandle sleeve l5. i

pivoted to the hand grip by means of having its lower end 14 extending through'an opening in the grip. I

As the operation of the handle advances the rod, such movement swings forward slightly the detent pawl so that the rod may pass freely through it. At the end of the advancing move,-

mentfhowever the spring 12 acting on the pawl cants it toward therear to bind the rod and thus retain the gain made; At the end of the discharge movement the rod maybe released by merely pushing forward the upper end' of the detent pawl and then the rod with its pusher plate maybe readily withdrawn by the projecting end 5| of the rod, whichforms a handle therefor.

To hold the cartridge in place when the rear end thereof is seated in the handle sleeve or cup 45, I provide a bail 80 which is pivoted at 8| to the handle body and is adapted to extend at its farthest portion across the discharging end of the cartridge and thus hold the cartridge in place with the other, end in the handle sleeve. This bail is of wire formation, its free ends are pivoted to the handle by means of inturned portions 83 which lie between the rear wall of the cup and the adjacent flange 43 of the hand grip, this flange being bowed rearwardly at 41 to receive such inward portion of the bail pivotally. The extreme ends of the bail arebent longitudinally rearwardly to form stops holding the bail in place and to limit the swing thereof, as such end portions come against the flanges of the handle.

At the forward end or intermediate portion of the ball the two legs thereof are first bent inwardly as'at 85, Fig. 4, and downwardly at 86 and then upwardly in arcuate formation 81 to define substantially a circle and then are con.-

end cap 30 of the cartridge and thus holds it effectively seated against the transverse end of I t spout is carried by the cartridge the intermediate portion 81 of the bail'whi'ch has a restricted entrance is simply sprung across the spoutin positioning the bail'in working position. 7

If desired, however, the spout may be carried'by the bail itself being mounted in this portion 81; When so mounted the dispensing apparatus is well adaptedfor operation with acartridge having at'the discharge end a central opening but no spout. Thereforein either case the bail-in activeposition snugly 'embra'ce the' spout and the spout registers with the discharge opening.-

'It will be seen that theresilien'ce' of the bail then holds the cartridge effectively in this position so that as thehand lever is operated the disc on the push rod 50 engaging the plunger cap'20 within the'c'artridge forces the body of material lengthwise'of the cartridge and extrudes the endmost portion througl'l the discharge opening. At the beginning of the operation such extrusion will break the sealor push out the rubber plug in the spout and thereafter feed the plastic material asdesired. V I

It will beseen that my manually operated apparatus is an extremely simple and relatively'inexpensive construction; that the cartridge whether equipped with a Spout or otherwise may be readily mounted therein and when so mounted a complete calking gun is provided. Suchhgun has readily'operable manual mechanism for extruding the material through the discharge'spout,

enabling use ofthe apparatus in the usual man ner of a'calking gun. The cartridge may remain in the apparatus as part of the complete gun 7 tion of a fresh one.

Iclaim:

l. Ina dispensingapparatus-for viscousmaterial, the combination of ahandle. a pusher carried thereby, and a Wire'bail attached to the handle and having its .intermediate portion adapted to extend across the outer end of a cartridge seated against the handle, said inter-- mediate portion providing two spaced inwardlyconcave regions to' engage opposite sides. of a spout associated with the outer end of the cartridge and a U,-shaped spring loop connecting said concave portion beyond the region of the spout and projecting free of the outer end of the cartridge to form a finger grip.

2, In adispensi'ng apparatus for viscous macarried by the handle, and a Wire bail pivotally mounted on the handle and having an intermediate portion adapted to engage the front end of a cartridge whose rear end engages said seat, said intermediate portion being in the form of a loop having two inwardly facing concave portions adapted to engage a spout by spring action, said concave portions being connected by a U- shaped portion projecting beyond the periphery of the front end of the cartridge to form a finger grip.

3. In a dispensing apparatus for viscous material, the combination of a handle provided with a seat for the rear end of a cartridge, a pusher carried by the handle and a bail attached to the handle and having an intermediate portion adapted to engage the front end of a cartridge whose rear end engages said seat, said intermediate portion being in'the form of a loop having inwardly facing concave sections to engage opposite sides of a spout associated with the front end of the cartridge and U-shaped portion interconnecting the concave sections, said U- shaped portion being bent forwardly relative to the plane of the front end of the cartridge to form a finger grip. I

4. In a dispensing apparatus for viscous material, the combination of a hollow handle having outwardly extending flanges at its forward end, a forwardly facing cup having a disc-like portion to which the flanges are secured, each of said flanges having two rearwardly offset channel formations extending in a diametric plane of the cup, a bail having inturned end portions at the ends thereof extending between the disk-like portion of the cup and said channel formations of said flanges, said ball having an intermediate portion adapted to overhang the front of the cartridge.

5. In a dispensing device for viscous mate-L rial, the combination of a sheet metal handle comprising two spaced side walls interconnected by a rear wall, means for holding a cartridge to the handle, a plunger rod slidably supported by said handle and adapted to move axially into the cartridge, an operating lever pivoted to said V 6 handle, means operated by said lever to feed said rod into the cartridge step-by-step, and a detent for said rod comprising a strip having one end extending in an opening through said rear wall of said handle to form a pivot for said strip and extending along the outside of said wall and transversely of said rod, said strip having an opening therein through which said rod extends, said opening having a diameter greater than'the rod diameter whereby the edges of said opening in said strip bind said rod when said strip is moved about its pivot from said handle and release said rod when moved toward said handle,

and a spring interposed between said wall and said strip to urge said strip into binding relation with said rod.

6. In a dispensing apparatus for viscous material, the combination of a handle having two upwardly projecting side portions, each side portion having an outturned flange at its forward end, a forwardlyfacing cup having its inner wall secured to said flanges, said flanges each having an open end channel formation cooperating with REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,157,552 Kispert Oct. 19, 1915 1,512,294 Marcy Oct. 21, 1924 1,986,166 Schneider Jan. 1, 1935 2,041,488 Robinson May 19, 1936 2,420,203 Sherbondy May 6, 1947 2,440,448 Purcell Apr.27, 1948 

